Battery capacity degrading 1% per cycle

[SecurityTinker]

I have a battery issue: starting from about two months ago, my battery has had its capacity decrease by 1% per cycle. I have no idea what it is doing this, as there has not been a change in my treatment of the battery. I go through at least once cycle per week. I have also tried "calibrating" as per the apple article. I have also reset the SMC. Nothing appears to change. What could be the issue?

A summary of battery info is here. Note the right column.

 

[GGJstudios]

Take it to Apple to have them check to see if your battery is defective. If it is and you have AppleCare, they'll replace it free.

The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.

This should answer most, if not all, of your battery/charging questions:

Apple Notebook Battery FAQ​